#include <stdio.h>

#define PRINTX printf("x=%d ", x)
#define PRINTY printf("y=%d ", y)
#define PRINTZ printf("z=%d\n", z)

int main()
{
int x=2, y=0, z=0;
PRINTX;
x*=3+2; PRINTX; PRINTY; PRINTZ;
x*=y=z=4; PRINTX; PRINTY; PRINTZ;
x=y==z; PRINTX; PRINTY; PRINTZ;
//x==(y=z); PRINTX;
}
